The one-year-old boy died on 9 December.
The criminal investigation was launched following a visit by Ofsted after the boy’s death. The nursery, in Bourne Street, Dudley, has been closed by Ofsted along with other linked premises.
Three women – aged 20, 23 and 50 – were arrested on 16 December on suspicion of gross negligence manslaughter and subsequently released on bail with strict conditions while enquiries continue.
A further three women – aged 51, 53 and 37 – were arrested on 4 January 2023 two were arrested on suspicion of corporate manslaughter and one on suspicion of gross negligence manslaughter.
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